1 files changed, 19 insertions, 0 deletions

diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 4f5f7cbdd508..7a940dbfc2e9 100644
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -77,3 +77,22 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
         for (i = 0; i < ways; i++)
                 __raw_writel(data, addr + (i << 8));
 }
+
+void local_flush_tlb_all(void)
+{
+        unsigned long flags, status;
+
+        /*
+         * Flush all the TLB.
+         *
+         * Write to the MMU control register's bit:
+         *      TF-bit for SH-3, TI-bit for SH-4.
+         *      It's same position, bit #2.
+         */
+        local_irq_save(flags);
+        status = __raw_readl(MMUCR);
+        status |= 0x04;
+        __raw_writel(status, MMUCR);
+        ctrl_barrier();
+        local_irq_restore(flags);
+}